<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <div ng-app="myApp" ng-controller="myCtrl">
        {{time}}
    </div>
    <script src="http://cdn.static.runoob.com/libs/angular.js/1.4.6/angular.min.js"></script>
    <script>
        var app = angular.module('myApp', []);
        //使用$interval服务
        // app.controller('myCtrl', function($scope, $interval) {
        //     $scope.time = new Date().toLocaleTimeString();
        //     $interval(function() {
        //         $scope.time = new Date().toLocaleTimeString();
        //     }, 2000);
        // })

        //使用$apply服务
        app.controller('myCtrl', function($scope) {
            $scope.time = new Date().toLocaleTimeString();
            $scope.setTime = function() {
                $scope.$apply(function() {
                    $scope.time = new Date().toLocaleTimeString();
                });
            }
            setInterval($scope.setTime, 1000);
        });
    </script>
</body>

</html>